union: the union of two sets, A and B, is the set of all elements that are either in A, or in
B, or in both A and B.
unit vector: a vector of length 1. It is customary to designate i as the unit vector in the x
direction, j as the unit vector in the y direction, and k is the unit vector in the z
direction.
variable: a symbol used to represent a value.
vector: a quantity that has both magnitude and direction.
velocity: the rate of change of position. The first derivative of the position function.
vertex: the point on an angle where the two sides intersect.
volume: measurement of space.
whole numbers: the set of numbers that includes zero and all of the natural numbers.
x-axis: the horizontal axis in a Cartesian Coordinate System.
x-intercept: the value of x at the point where a curve crosses the x-axis.
y-axis: the vertical axis in a Cartesian Coordinate System.
y-intercept: the value of y at the point where a curve crosses the y-axis.
Z
zero: the additive identity.
The number that when you add it to a number, n, you
will get
n as a result.
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